2.14. Tires and check of pressure in tires

Tires are the only parts of the car which constantly are in contact with the road. Even the total contact surface of all tires – small. Therefore it is regularly necessary to carry out a careful inspection of tires as both own safety, and safety of other participants in traffic to a large extent depends on a condition of tires.

Continuous check of a condition of tires gives the chance in due time to find intensive wear and to remove its cause that will allow to avoid more serious consequences.

With uneven wear of tires it is necessary to find the reason of it and to eliminate it.

Check tires for existence of cuts, punctures and foreign objects in tires. Places of leak of air from the tire can be defined by soapsuds.

Carefully survey internal lateral face of each tire on existence of traces of brake fluid.

The required pressure in tires prolongs the term of its service therefore it needs to be checked regularly. You make control of pressure in tires only on cold tires.

Check of level of wear of protectors of tires

Tires of wheels need to be replaced immediately if the special indexes which are below at the bottom of a protector as a result of wear are made even to a tire protector surface.

The provision of indexes is designated by a triangular tag on an onboard wall of the tire.

Measurement of depth of the drawing of a protector of the tire

Depth of the drawing of a protector of tires can be controlled by special adaptation. At achievement of extreme wear of the tire it is necessary to replace.

Check of pressure in tires

Check of pressure in tires is made only on cold tires. Optimum pressure in tires increases service life of tires and operational parameters of the car.


Side wear of a protector


Low pressure in the tire (wear from two parties). Low pressure in the tire leads to continuous deformation of the tire and the wrong contact of the tire with the surface of the road. At the same time the cord of the tire strongly wears out and coupling of the tire with a paving decreases. Also because of an overheat of the tire there can be its gap.

Wrong corner of disorder (wear on the one hand). It is necessary to make repair of a suspension bracket.

Overcoming turns at a high speed. It is necessary to reduce speed on turns.

Wear of a protector in the center


High pressure in the tire. With a pressure in the tire much above norm there is an intensive wear of a protector in the center of the tire, coupling of the tire with a paving decreases, the tire does not extinguish roughness of the road therefore all blows are transferred to a body and the probability of a rupture of the tire increases. Check and bring to norm pressure in tires.

In certain cases it is necessary to increase pressure in tires, in particular, at the movement at high speeds or with big loading, at the same time do not forget to bring pressure to norm at normal operation of the car.

Uneven wear


Tires on forward wheels can unevenly wear out from communication with not coaxiality of wheels. At the same time it is necessary to adjust the angles of installation of wheels.

Wheels are not balanced. Balance wheels.